Ice-crusher.



J. M. NELSON. 101: GRUSHER. AAAAAAAA ION FILED MAR. 15, 1909.

1,013,509. Patented Jan. 2, 1912.

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J. M.. NELSON. ICE CRUSHBR. APPLIGATION FILED nu. 15, 1909.

Patented Jan. 2, 1912.

2 SHEETS-'SHEET 2 fr I Nfa rc 'i n a i q JOI-IN lVI. NELSON, OFDAVENPORT, IOWA, ASSIGNOR- TO DAVENPORT ICE CHIPPING MACHINE COMPANY, OFDAVENPORT, IOWA, A CORPORATION OF'IOWA.

ICE-CRUSI-IER.

Specification of Letters Patent.

Application led March 15, 1909. Serial No. 483,516.

To all whom it may concern:

Be it known that I, JOHN M. NELSON, a citizen of the United States, anda resident of Davenport, in the county of Scott and State of Iowa, haveinvented certain new and useful Improvements in Ice-Crushers, of whichthe following is a clear, full, and exact description.

My invention relates to machines for crushing or breaking ice from alarge or small block and which, according to the size of the machine maybe operated either manually or by suitable power.

The particular object of my invention is to provide a suitable breakerblade or pick, which, on account of its peculiar construction willsuccessfully operate in such a manner as to effectively break up the iceinto uniform pieces and avoid any clogging of the machine. This Iaccomplish in the manner hereinafter fully described and as moreparticularly pointed out in the claims.

In the drawings Figure l is a side elevation of an ice chipping machinehaving a portion of the side wall of the case broken away in order toclearly show the arrangement of my improved ice breakers or picks. Fig.2 is a top plan view of said machine, also showing the arrangement ofthe picks. Fig. 3 is a side elevation of one of my im,- proved icechippers mounted on a fragmentary portion of the rotatable drum, anddrawn to an enlarged scale. Fig. fl is a top plan view of said icechipper detached from the machine. Fig. 5 is a front end elevation ofone of said ice breakers. Fig. 6 is a detail view, drawn to an enlargedscale, of the bolt and nut used in securing the ice breaker to the drumof the machine.

Referring to the drawings, A represents a suitable casing of anice-crushing or breaking machine in which the breaking mechanism isadapted to be housed, and is preferably of substantially rectangularshape and constructed of two corresponding cast-metal parts. This casinghas the lower portion of its front wall cut away from its bottom up to apoint approximately midway its height and has its top left entirely openin order to permit of free access to the mechanism housed within thesame, and also provide a mouth o in the upper portion thereof. Assuggested in dotted lines (Fig. l) the lower portion of the interior ofthis casing is provided with an inclined shedding wall a that slopesfrom the rear wall forwardly toward the center of length of the bottomof the casing.

At a p'oint preferably in the horizontal plane of the top of this wall asaid casing is provided with suitable oppositely arranged bearings forjournaling a horizontally disposed rotatable shaft b, the ends of whichextend beyond its bearings and which, on one end, is provided with aloose and a fast pulley B, B', that are driven by any suitable motivepower. is securely mounted on this shaft mediate the side walls of thecasing, and is adapted to rotate therewith. This drum is so located thatapproximately a quadrant thereof is below the mouth or opening o in thetop of the casing and preferably forms the lower portion of ahopper-shaped compartment in which the block of ice to be crushed orbroken is placed. Mounted in geometrical order on the circumference ofthis drum are four rows of ice-picks D, the special construction of theblades of which are adapted, while the machine is in opera tion, tocrush and break the ice into small particles of uniform size, as well asprevent the clogging of the machine. These picks D are, preferably,arranged six in a row around the circumference of t-he drum and instaggered relation to those in the preceding and succeeding rows. Ofcourse it will be understood that any convenient number of rows may beemployed, but I prefer the use of four rows, as this is the mosteconomical and .efficient number, and I arrange each of said rows in aplane at an angle of about sixty degrees to the plane of rotation of thedrum. These picks are preferably constructed of sheet-metal, cut andbent to a shape, substantially as shown in Figs. 3, 4, and 5 of thedrawings. They comprise a suitable concavo-convex, or arcshapedattaching-plate E that conforms to the segment of the circumference ofthe drum to which it is secured and a pick F that projectslongitudinally from said arcshaped plate E into a vertical position, atsubstantially right-angles to the plane thereof. These picks extendbeyond the front edge of plate E and its front edge is cut away to forman advanced pointed pick end or point f, at its forward outer angle thatprojects beyond the remainder of the body of the pick and is preferablyflattened Patented Jan. 2, i912.

A hollow drum C or broadened out horizontally toward its apex to presenta horizontal cutting edge. The straight edge f of the cut away portionis beveled to form a chisel-shaped cutting edge that is at right anglesto the edge of the point of the pick, substantially as shown in Figs. 3and 5 of the drawings.

The plate E of the pick is provided with one or more openings, throughwhich suit able headed bolts G are insertedand secured in place by nutsg. These nuts are each provided with transverse kerfs g that extendabout half way through the same in a plane parallel with the plane ofthe top and bottom thereof, and, after said nuts have been tightened,the kerf is closed by pressing the metal thereof together, causing thethreads of the nut to bind securely upon the threads on the bolt andlock the saine together.

lVhat I claim as new is l. An ice-breaker comprising a plate, and

' a rib arising at right-angles therefrom having a vertical cuttingedge, and having a portion projecting' beyond the vertical plane of saidcutting-edge that is provided with a horizontal cutting-edge atsubstantially right angles to firstrnentioned cutting-edge.

2. An ice-breaking machinecoinprising a suitable casing, a rotatabledrum mounted within the same, and a plurality of icebreakers carried bysaid drum each consisting of a plate secured to said drum, and a ribarising therefrom having a vertical cutting-edge that is radial fromsaid drum and having a portion projecting beyond the vert-ical plane ofsaid cutting-edge that is provided with a horizontal cuttingedgedisposed in a plane parallel to the plane of the aXis of said drum.

In testimony whereof I have hereunto set my hand and seal this lst dayof November, A. D., 190s.

JOHN M. NELSON. [1.. s]

fitnesses LOUISE GOEDE, ELSIE HALDALL.

Gopies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

